How to evaluate the good and bad of a voice? I think this question is worthy of everyone's worth discussing. That is to say, it is mainly evaluated by two aspects. The first is subjective evaluation, which relies on the auditory organs of the human ear to feel the sound to the human; the second is objective evaluation, which is the actual quality of the sound. Subjective evaluation is based on listening, and objective evaluation is based on testing, or by measuring standards. If you use these two methods to evaluate the good and bad sounds at the same time, it is more comprehensive.
If subjective evaluation is used to estimate the quality and difference of sound quality, there are some imperfections. There are many factors that influence subjective evaluation.
1, the sensitivity of the human ear
Due to the physiological structure, health and developmental differences of each individual, each person's hearing sensitivity is different, and the hearing sensitivity of the left and right ears is also different. This causes each person's hearing sensitivity to be different, just like the human eyesight. Some people have left eye 1.5, right 1.2, and some have left 0.5 and right 1 different. Therefore, the evaluation of the tone has a great influence.
2, the impact of age on hearing
Due to physiological reasons, with the increase of age, the auditory organs such as the eardrum, the cochlear tissue elasticity of different frequency sensing points is weakened, so the ability to distinguish high-frequency sounds will gradually decrease, thus affecting the accuracy of sound quality evaluation. Sex.
3, influenced by the level of education
The level of a person's education affects subjective evaluation. Because the field of acoustics is a multidisciplinary, complex physical phenomenon, it has a very close relationship with physics, mathematics, architecture, music and other disciplines. To have a comprehensive and accurate understanding of the tone, it is necessary to have a level of quality and a level of quality in all aspects. Therefore, the comprehensiveness of a person's education and the depth of his influence influence the evaluation of the tone.
4, the appreciation of art
Each person's artistic literacy and artistic concept are different, and the understanding of the artistic expression of the timbre is also different. This aspect is also one of the factors that influence the evaluation of tone.
5, the psychological impact of people
Everyone has different feelings on the tone in different periods, different moods, different living environments and different mental states (mindset). This also affects the subjective evaluation of the tone.
6, each person's preference
Each may belong to this or that artistic genre in different art fields, so each person has a psychological preference for some preference, which is allowed. Therefore, this factor also affects the evaluation of sound quality.
7, different countries, nations
Different countries, different nationalities, different regions and different eras have different standards and listening habits for understanding timbre. So the evaluation of the tone is very different.
Therefore, subjective evaluation is a comprehensive aesthetic evaluation of feelings, which is influenced by many factors.
The degree of accuracy of the subjective evaluation of the timbre depends on the auditory sensitivity of the human ear and the ability to distinguish and analyze the timbre structure, so as to distinguish the pros and cons of the timbre. Moreover, there is often a big difference between subjective evaluation and objective evaluation. This is because subjective evaluation is the direct feeling of the human ear to the sound, and the objective evaluation is the accurate sound received by the instrument or the sound equivalent to the instrument. . Since there are many acoustic effects and acoustic effects on the sound field when the sound is transmitted to the human ear, the difference between the two is different. Only by taking into account various acoustic effects will the two be unified. That is:
Subjective evaluation = objective evaluation + human ear effect
In order to conduct a comprehensive subjective evaluation and objective evaluation of the sound quality, it is first necessary to have a comprehensive understanding and understanding of the structure of the timbre, especially the overtone structure, and to have analytical capabilities. In this way, it is possible to accurately judge the good or bad of a tone.
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